JSP彩色验证码_MySQL
- WBOYOriginal
- 2016-06-01 14:06:371104browse
验证码
生成有4个随机数字和杂乱背景的图片，数字和背景颜色会改变，服务器端刷新（用history.go(-1)也会变）
原型参考ALIBABA http://china.alibaba.com/member/showimage
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